What is the control volume or closed system under analysis C
Solution
1. In thermodynamics, a closed system is referred to a fixed mass and volume enclosed within a boundary. The boundary might change, that expands or contract, but the total mass remain the same. Another term interchangeably used with the closed system is control volume, which refers to the constant flow of fluid.
In the given question, the closed system is the blood vessels. The constant flow of blood in the vessels represent the constant flow. The boundary or wall of the blood vessels has muscle cells which help in dilating or constricting the blood vessels. As a result, heat flows out of the epidermis or is retained within respectively
2. From the law of conservation of energy, we know that energy can neither be created nor destroyed. It only changes from one form to another. Similarly, in the given case, the kinetic energy of the blood flow is converted into energy, which is dissipated out as heat.
